The SpeedPuck is designed for long-term reliability in a saltwater marine environment. The SpeedPuck's caseback screws on and off like the lid of a leak-proof water bottle to reveal the battery compartment. In addition to this, the battery compartment is completely sealed off from the rest of the device's electronics, providing a second layer of protection against moisture.

The SpeedPuck combines a high-accuracy GPS speedometer, compass and bar graph wind shift indicator in a compact, durable package. It is designed to be mounted on a dinghy or handheld when hiking on a sportboat. The SpeedPuck improves your sailing by allowing you to quantify the effects of boat trim, sail trim, wind shifts and current. No more second guessing yourself.